Click on the third or sixth rank to set the en passant target square.

EGTB: win in 54 half-moves

# move score
1 Rb8 win in 53 half-moves
2 Ka7 draw
3 Kb7 draw
4 Kb8 draw
5 Kd7 draw
6 Ke7 draw
7 Rc8 draw
8 Rd1 draw
9 Rd2 draw
10 Rd3 draw
11 Rd4 draw
12 Kf7 loss in 2 half-moves
13 Kf8 loss in 2 half-moves
14 Rd5 loss in 2 half-moves
15 Rd6 loss in 2 half-moves
16 Rd7 loss in 2 half-moves